Released: October 2018 Quarterly Exchange Updates

The latest cumulative update for Exchange Server 2016 is now available on the download center. There is no release for Exchange Server 2013 or Exchange Server 2010 as these products are both in the extended support phase of lifecycle. The cumulative update released today includes fixes to customer reported issues, all previously reported security/quality issues…


MS11-025 required on Exchange Server versions released before October 2018

In the security advisories released on 10/09/2018, CVE-2010-3190 was updated to apply to Exchange Server. This bulletin now applies to all versions and cumulative updates for Exchange Server released prior to October 2018. The Exchange team is aware that the installation program for Exchange Server is applying an unpatched version of a Visual Studio released…


Announced: improvements to Hybrid Publishing and Organization Configuration Transfer

What just happened? During a rousing presentation that was marked by wild cheers and standing ovations, we announced a few features designed to simplify hybrid Exchange deployments and speed onboarding to Exchange Online (EXO). The features we discussed focused on two key problems, hybrid administration and configuration as customers prepare to move to the cloud…


Get Ready for Microsoft Ignite 2018

Unless you’ve been living under an IT rock, you’ll know that Microsoft Ignite is happening soon. September 24th to 28th to be exact, in Orlando Florida. If you didn’t buy a ticket already then I’m sorry to break to you that you are too late. It’s sold out! But it’s not all bad news; far…


Deploy Exchange Server 2019 on Windows Server Core

Hurrah! If you have not yet heard: Exchange Server 2019 Public preview was announced earlier, and it is the first version of Exchange that you can install on Server Core! Now, while that’s great news, if you haven’t worked on Server Core, there may be bit of a learning curve. The purpose of this post…


Exchange Server 2019 Public Preview

We’re pleased to announce a preview build of Exchange Server 2019 is now available. You can download it here. We strongly believe Office 365 delivers the best and most cost-effective experience to our customers, but we understand that some customers have reasons to remain on-premises. Exchange Server 2019 is designed to deliver security, performance, and…


Issue with July Updates for Windows on an Exchange Server

The Exchange team is aware of issues with the Windows Operating System updates published July 10th, 2018 causing Exchange to not function correctly. The Windows servicing team has advised us that they will be releasing updates to the affected packages. We encourage Exchange customers to delay applying the July 10th updates, including the security updates…


Upcoming changes to Exchange Web Services (EWS) API for Office 365

Over the last few years, we have been investing in services that help developers access information in Office 365 in a simple and intuitive way, specifically through Microsoft Graph.  Microsoft Graph and the use of OAuth 2.0 provide increased security and seamless integration with other Microsoft cloud services and is rapidly expanding developer access to…


Resource Based Throttling and Prioritization in Exchange Online Migrations

We often get questions about throttling in Mailbox Replication Service (MRS) based migrations in Exchange online. When migrating, you may see messages such as StalledDueTo_TargetDiskLatency for some periods of time. These messages come from our resource-based throttling infrastructure in Exchange Online. This is how this would look like in the output of Get-MoveRequestStatistics: PS C:\>…